蚕豆细菌性茎疫病发生规律及防治

Occurrence of bacterial stem blight of broad bean infected by Pseudomonas fabae

蚕豆细菌性茎疫病是蚕豆上的重要病害之一。病残体及病田土是该病的初侵染源。发病盛期为开花～结夹期 ,低温多雨的气候发病重 ,发病程度与温度、田间湿度及土壤肥力密切相关。室内药剂筛选试验表明 :可杀得、菌毒清、农用链霉素均有较好的抑制效果。选种抗病品种、加强农田管理、结合药剂防治 。

The bacterial stem blight is one of the important diseases on broad bean. The bacteria on plant residues and soil of diseased fields are the primary resource of infection. It is easy to become epidemic in the period of bloom to pod of broad bean plants, especially in conditions of lower temperature and rainy days. Severity of the diseaseis closely related to temperaure, RH and nutrition of soils Copper hydroxide, Junduqing and streptomycin were the best controling efficacy in the tested bactericides screening in laboratory. Planting resistant varieties and cultured control intergrated with chemical control are useful measures for suppressing the disease.